Sewer-gas trap.



I'. E. CUDELL.

SEWER GAS TRAP.

APPLIOATIQN FILED JANJQ, 1912.

Patented May 28, 1912.

3 SHEETS-SHEET 1.

1.197555 5: v M ma F. E. GUDELL.

SEWER GAS TRAP. APPLICATION FILED JAN. 19, 1912'.

1,027,997, Patented May 28', 1912.

3 SHEETS-SHEET 2.

.oLuMBlA PLANooRAPH 1:0.,WASHIN01'DNy D. c.

F. E. GUDELL.

SEWER GAS TRAP.

APPLIGATION FILED 11111.19, 1912.

Patented May 28 3 SHEETS-SHEET 3.

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SEWER-ens TRAP.

Specification of Letters Patent.

Patented May 28,1912.

Application filed January 19, 1912. Serial 110.672,05?.

To all whom t may concern:

Be it known that I, FRANK E. CUDELL, a citizen of the United States, resident of Cleveland, county of Cuyahoga, and State of Ohio, have invented a new and useful Improvement in Sewer-Gas Traps, .of which the following is a specification, the principle of the invention being herein explained and the best mode in which I have contemplated applying that principle, so as to distinguish it from other inventions.

My invention has reference to a sewer-gas trap and more particularly to the type commonly known as pot traps.

The object of the invention is the provision of a trap of this character which will more certainly insure the refilling or resealing to a required depth of broken water seals.

The said invention consists of means hereinafter fully described and particularly set forth in the claims.

The'anneXed drawings and the followingI description set forth in detail certain means embodying my invention, the disclosed means, however, constituting but one of various mechanical forms in which the principle of the invention may be applied.

Figure 1 `is an elevation partly in section of a trap embodying my invention. Fig. 2 is a section on lines II-II of F ig. 1 looking in the direction of the arrows. Fig. 3 is an interior modification of the view shown in Fig. 1. F ig. 4 is a cross-section on lines IV-IV of Fig. 3 likewise looking in the direction of the arrows. Fig. 5 is a further modification of the view disclosed in Fig. l

showing one portion thereof transposed and adjustable. Fig. G is a View of a further modification applicable to bath tubs. Fig. 7 is an end elevation of still another modication. Fig. 8 is a section on lines VIIIVIII in Fig. 7, looking in the direction of the arrows. Fig. 9 is a section on lines IX-IX of Fig. 8 looking in the direction of the arrows. Fig. 10 is an end view of a further modification specifically of the form disclosed in Figs. 7, S and 9. Fig. 11 is a section on lines XI-XI lof Fig. 10, again looking in the direction of the arrows and having the position of one port-ion transposed in dotted lines. Fig. 12 is a modification of Fig. 11 after the manner of the diierentiation feature suggested in Fig. 5. Fig. 13 is anend elevation of a final modification. Fig. 14 is a side view of same partly in section, further showing one portion in dotted lines in an altered position. Fig. 15 is a top plan of the final modification represented by Figs. 13 and 14.

Referring first to Fig. 1, the construction comprises as an -entirety a downwardly extending inlet duct A provided with an angular inlet opening al, a downwardly eX- tending outlet duct Z provided with an angular outlet opening proper el, and finally the cylindrical pot B positioned intermediately of the ducts A and Z, and in communication with both the lower inlet a and the diagonally opposite upper out-let el. The top of the pot B is in this instance closed, whereas the bottom ris open and interiorly provided with screw-threads b2. The pot B shown is furthermore composed of an upper' and lower section integrally joined at Z13 by welding or other approved means. A clean-out cover C provided with finger lugs c1 is provided with complementary exterior screw-threads and is adapted to be screwed into the bottom opening of the pot B as clearly seen in Fig. 1. The cover C supports cent-rally an upwardly eX- tending tubular shaped partition c2. This partition is integral with the cover C and `furthermore likewise composed of two parts welded at c3 in any approved manner. The primary tubular partition c2 is itself provided with upper and lower laterally project ing portions respectively designated at c4 and These angular portions project in accordance with this specic conception in opposite directions and are furthermore flared to present divergent openings as most clearly outlined in Fig. 2. As so formed and positioned, the flaredportions c4 and c5 are adapted to more readily register respectively with the outlet opening al and the inlet openingal. Theportions c4 and c5 are furthermore spaced a slight distance from the annular surfaces surrounding the outlet and inlet openings as clearly seen in both Figs. 1 and 2. These annular spaces are respectively designated by the .reference characters c and c7.

As thus described and as should now be apparent the operation of my trap is as follows Liquid after being discharged downwardly through thev inlet duct A passes up through the substantially central duct or passage es inclosed by the partition c2 and thence into t-he outlet duct Z preparatory to final discharge. During its passage, however rapidly, through the duct es, a considerable portion of the flow will finally have entered the annular space or refilling chamber b4 which surrounds the duct cs and specifically through both the spaces c and c7. When there is a discharge of water in considerable quantity, the water diverted through these spaces c and c7 proves to be sufficient to completely fill the surrounding annular space. YWhile the siphon action, due to long unvented waste pipes is effective, the discharged liquid will be almost entirely drawn from the duct es, whereas the water in the annular space b4 surrounding such partition, because of the constricted openings C and o7 which are momentarily closed by the rapid rush of air, will remain comparatively quiescent. Consequently after the siphon action is over, this accumulated supply of liquid will seek its true level and hence establish the required water seal.

A special note is here made of the inventive advantages which my construction insures in practice. By having the partit-ion c2 with its upper and lower oppositely projecting angular portions c and c centrally disposed the normal course of the main current of the liquid through the pot is in fact the substantial diagonal, and hence the shortest route, between the diagonally 0pposite inlet and outlet openings. By reason of this circumstance, the siphon action by being quite direct is calculated to have less of an effect upon either the air or water which may chance to be contained in the annular space b4 of the pot. Consequently, as already intimated considerably less of a disturbing effect will be found caused with reference to the water that has been stored for the purpose of forming the final water seal. Thus a refilling chamber b4 of maximum volume relative to the volume of the entire pot B is provided. and the maximum average supply of water maintained within it By having the partition 02 attached to the clean-out cover, an obviously improved facility for cleaningthe interior of the trap is presented. Finally recognizing full well the need for a compact structure as a whole the maximum volume of space, for the purpose of serving the function of a refilling chamber in traps of this kind, is provided.

Considering now the modification disclosed in Figs. 3 and 4, it will be noted that the difference resides merely in the shape and position of the partition c2. In this case, the partition instead of being in and of itself a duct merely assumes the nature of a parabolic curve, having its concave side adjacent and facing the outlet side of pot B. Furthermore, by reason of this dierentiation from the form shown in Figs. l and 2,

only a lower though longer angular portion c5 is required and. also in place of the upper annular space c found in the previous form, a pair of longitudinally extending spaces c c are provided. The refilling chamber bt surrounding the constricted duct or passage as as inclosed by the partition c2 is necessarily also altered to assume the shape best observed in Fig. ll. The operation is of course practically similar.

Referring next to Fig. 5, the differentiation from Fig. 1 will be found to rest in the provision of the outlet opening Z1 in the top rather than the upper side of the pot B The outlet duct Z instead of being integrally associated, with the pot B around such a side opening is adjustably secured thereto through the agency of the union c which being loosened permits the outlet duct Z to be rotated to assume various positions of partial rotation and so adapt itself to a like number of accommodations. y

Considering next the bath tub modification shown in Fig. 6, it will be seen that this is shown seated in the customary manner in the Hoor F a portion of which appears in section. According to this form, the inlet duct A finds entrance to the side of the pot and near the top whereas the acutely bent outlet duct Z communicates with the bottom of the pot, and preferably as shown with the center thereof. The partition member 02 is again secured to the cover which is in this instance situated at the top of the pot B in order to rest above the floor F in the usual manner. The design of the partition c2 is identical, save for being reversed to that shown in Fig, 5. The principle of the more assured refilling operation remains precisely similar by reason of the lower and upper spaces 06 and @7.

Looking on to the next modification represented in Figs. 7, 8 and 9, it will be seen that the differentiating feature is radically associated with both the shape and location of the pot B. From a closer inspection of these gures, the pot B will be seen to project laterally with reference to theI normally assumed position of the trap as a whole and is in consistence provided with a lateral clean-out cover. The course of the liquid under process of discharge through this type of trap is downwardly through the pot and thereafter upwardly through an acute bend imparted to the outlet duct Z. As most clearly appearing in Fig. 9, the cover C supports a removable partition c2 comprising a horizontally projecting pipe to which is attached an upright curved surface with concave side similarly adjacent and facing the outer side of the pot,-f. e., that side of the pot nearest the outlet duct Z. In this form, the constricted refilling channels or spaces c6 and c7 are continuous from the top to the bottom of the pot somewhat after the manner of the upright spaces c6 and 07 of the first modification shown in Figs. 8 and 4. The horizontal pipe portion of the partition c2 has openings 010 to permit its interior to add volume to the refilling chamber b4 and is furthermore screw-threaded to the cover C at o. This form likewise compels the main bulk of the liquid to take t-he shortest routel possible t-hrough the pot and hence occasions a proportionately reduced disturbance of the liquid which is in the refilling chamber 7)* and consonantly precludes a proportionately greater amount of the water from being withdrawn therefrom during an unusually strong siphon action.

Figs. 10 and 11 dier from the previous form considered primarily in the direction of passage of the liquid discharged through the pot B and hence necessarily also in the reversal of the shape of the inlet and outlet ducts A and Z. As will be most readily apparent in Fig. 10, the inlet duct A is provided with the acute bend intended to contain the water seal and communicates with the bottom of the pot rather than the top. lf desired, the outlet duct Z may be made as suggested in dotted lines in Fig. 11 to complete a half S with reference to the construction as a whole rather than a full S.

Fig. 12 comprises a combination of the forms shown in Figs. 5 and 10. The direction of passage of the liquid through this form is identical with that of Figs. 10 and 11, whereas the outlet duct Z is adjustably connected with the top of the pot through the medium of a union c and for a practical purpose precisely similar to that stipulated in connection with the description of Fig. 5.

lith final reference to the form disclosed in Figs. 13, 14 and 15, it will be seen that the change consists again merely in a transposition and hence as a prerequisite the I shape of the inlet and outlet ducts. The inlet duct A approaching the pot from above and to one side of its median line, passes downwardly below the same as best seen in Fig. 13, where it is bent toward such imaginary line as also seen in Fig. 15 and finally upwardly so as to communicate with a lower inlet opening al disposed on one median line of the pot, and with the main passage 0S surrounded by the partition c2. The outlet duct Z is symmetrically bent in such a way that it will avoid the inlet duct A and then communicate with the pot directly above the inlet al. The interior of the pot B and specifically the formation of the partit-ion c2 with its resultant substantially vertical spaces c6 c7 is precisely similar to that disclosed in Fig. 9, and hence not again similarly represented in this connection. If desired in this form the outlet pipe may alternatively approach the pot as indicated in dotted lines in Fig. 14.

Attention is by way of summary finally directed to the pair of distinct structural arrangements which are found throughout all the views and all of which because of a precisely similar operation in each of the modiiications are respectively based upon a pair of common inventive principles. One thecry consists in always permitting the bulk and hence the current of iiow to follow the shortest route between the inlet and outlet openings of the particular pot irrespective of their relative locations. The succeeding siphon draft will then have a course of least resistance provided, along which its excessive drainage proclivities will be effectively dissipated by a rush of air in place of water. Consonant-ly the larger portion of the water stored in the surrounding refilling chamber is retained and a more reliably uniform supply assured. The other feature common to all the views is the attachment of the formative partition c2 to the clean-out cover, whereby the removal of the latter exposes and so facilitates the accessibility of any suitable cleansing appliances to all interior surfaces;

Having fully described my invention, what I claim is:

1. A sewer gas trap comprising the combination of a pot provided with Lipper and lower openings, and an interiorly positioned duct communication with said openings and with said pot, said duct having liared portions adjacent said openings.

2. A sewer gas trap comprising the combination of a pot provided with upper and lower openings, a removable cover for said pot., a removable duct interiorly connecting said openings, said duct communicating with said pot adjacent each such opening.

3. A sewer gas trap comprising the combination of a pot provided with inlet and outlet openings, a cover removably secured, thereto, and a duct attached to said cover and connecting said openings, said duct being non-contiguous with said pot.

4. A sewer gas trap comprising the com bination of a pot, provided with inlet and out-let openings, a duct-forming member movably positioned within said pot, said' duct itself provided with flared end openings communicating with said inlet and outlet openings and with said pot.

5. A sewer gas trap comprising the combination with a pot having inlet and outlet openings; anda partition forming an interior duct in direct communication with said openings, said duct having restricted' communications with said pot adjacent said openings.

6. A sewer-gas trap comprising the combination of a pot having upper and lower openings, a removable member secured 'to said pot, and a partition attached to such member and forming a duct extending across said pot in the direct line of said openings, said duet communicating with said pot near euch suoli opening.

7. A sen/enges trap comprising the Combination of a, pot lmvingn lower inlet and an uppei` outlet opening, a cover removably secured to said pot, and a partition member attached to said Cover and projecting substantially across said pot and between said openings7 said member being bent and form- FRANK E. CUDELL.

nary 1912.

tnesses VM. ROTHENBERG, JOHN MEUTSGHIK.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C. 

